Door lock closure and assembly



April 5, 1960 P. FRIEDMAN ETAL 2,931,206

DOOR LOCK CLOSURE AND ASSEMBLY Filed Nov. 26, 1956 2 Sheets-Sheet 1 FEZ IN V EN TOR S. PHILIP FRIEDMAN GEORGE EEO/WAN By CdWMdA flow/E7 April 5, 1960 P. FRIEDMAN ETAL 2,931,206

DOOR LOCK CLOSURE AND ASSEMBLY 2 Sheets-Sheet 2 Filed Nov. 26, 1956 41 19 3344344 &

I N V EN TORS. I HILIP FlzlibMAN 61:01:05 F f/wm/v BY 4% Z 6 A TOR/V y United States Patent O DOOR LOCK CLOSURE AND ASSEMBLY Philip Friedman and George J. Friedman, New York, N.Y.; Iris Friedman and Hyman Orenstein, executors of said Philip Friedman, deceased, assignors to Rose Grossman, Ruth Stein, Iris Friedman, and Hyman Orenstein as trustees for Barry Friedman, and Iris Friedman and Hyman Orenstein as trustees for Robert Friedman, doing business as G.F.S. Investing Co., Brooklyn, N.Y.

' Application November 26, 1956, Serial No. 624,471

2 Claims. (Cl. 70146) use on outside screen doors and storm doors which are in common use today. Our invention eliminates many of the necessary parts of a tumbler-type lock which is ordinarily used on such doors and is easier to install than the present tumbler-type locks currently in use. Further objects and advantages of our invention will appear in the drawings and specifications herein. Similar numerals throughout the several views of the drawings refer to similar parts of our invention. We attain the objects and advantages of our invention by the device illustrated in the accompanying drawings.

Fig. l is a top plan view;

Fig. 2 is a cross-section along the lines 22 in Figure 1;

Fig. 3 is a cross-section along the lines 3--3 in Figure Fig. 4 is a cross-section along the lines 4-4 in Figure 2 showing the stop pin in locking position;

Fig. 5 is a view similar to Fig. 4 except that the stop pin is in unlocking position;

Fig. 6 is a cross-section along the lines 6--6 in Figure 2; and

Fig. 7 is a cross-section along the lines 7-7 in FigurelZ.

Our device is used in conjunction with a door 10 and a door frame 11. The inner handle 12 of the device has a latch portion 13 which engages a strike bar 14 in a strike latch 15 which is attached to the door frame 11. Our closure device operates on a rotating principle. When a handle 12 is rotated approximately 90 degrees the latch portion 13 disengages the strike bar 14 and permits the door to be opened. The handle 12 may be rotated from the inside by rotating the handle 12 or it may be rotated from the outside by rotating the outer door knob 13.

The device is constructed in two assemblies: The outer door knob assembly 15 and the inner door knob as sembly 16. The outer door knob assembly 15 comprises a door knob 13 and a shank 17. In the door knob shank 17 there is a usual type swivel tumbler lock 18 with key 19. The door knob is attached to a hollow shaft 20 which has a hollow stop portion 21 cast integral therewith.

A front plate assembly 22 acts as the frame for the outer door knob assembly 15. In it an H shaped stop 23 is disposed on springs 24. One end of the springs rests on the bottom part of the frame 22 and the other end of the springs rests on steps 25 of. the H shaped stop 23. The H shaped stop 23 is forced by the action of the springs 22 against the ends of the hollow stop portion 21 thereby maintaining the shaft 20 in a normal fixed position. The shaft 20 may be rotated either to the right or left by pressure on the door knob 13 or the door handle 12 but as soon as the pressure is released, the springs 24 and the H shaped stop 23 will return the shaft 20 to its normal position by means of the hollow stop 21. Inside of the hollow stop 21 there is'a stop pin 26 which may be adjusted to either protrude beyond the hollow stop 21 or to remain within the hollow stop 21. This adjustment of the stop pin 26 is made by the cooperation of a spring 27 and an inner shaft 28.

The inner shaft has a recessed seat 29 which receives the base 30 of the stop pin 26. The spring 27 presses against the base of the stop pin 30 and seats it on the seat 29 of the inner shaft 28. When the inner shaft 28 is rotated approximately 90 degrees, the seat 29 is rotated away from the base 30 and the circumferences of the inner shaft 28 forces itself against the base 30 forcing it out of the hollow stop 21. This makes the stop pin 26 rise between the stop pin strikes 31 and prevents the shaft 20 from being rotated. When the shaft 20 is prevented from being rotated, the latch portion 13 of the handle 12 cannot be disengaged from the strike bar 14 and the door is in locked position.

The inner shaft 28 may be rotated either by the swiveltype tumbler lock 18 or by the inner latch rod 39, and its finger control 40. The end 35 of inner shaft 28 is made in a diamond shaped cross section to engage the tumbler lock 18 to form a lost-motion connection therewith. The inner latch rod 39 fits into the other end of the inner shaft 28.

The inner handle assembly 16 comprises the door handle 12, an inner plate 32, the inner latching rod 39 and the finger control 40. The handle 12 is inserted into an opening in the plate 32 and pressure is applied to separate the inner part of the handle at points 33 as shown in Figure 2 of the drawings so that the said handle is separated sufliciently at attach it to the plate and yet permit it to rotate freely.

The inner handle assembly 16 is then inserted over the shaft 20 along slots 34 and the inner latching rod 39 engages the inner shaft 28 and is thus permitted to rotate the inner shaft when desired. The inner latching rod 39 also has a stop 36 to limit its scope of rotation to approximately 90 degrees.

The assembly of the entire mechanism is completed by inserting screws 37 and screwing them into the threads 38 provided on the plate 22. It will be noted that in order to insert the mechanism on the door, it is necessary to drill one hole of approximately one-half inch or less for the shaft 20 and two holes of approximately threeeighths of an inch or less for the screws 37. This feature makes it very easy to install our closure on a door since most other closures which have door knobs and handles on both sides of the door require a much larger opening to be either drilled or gouged through the door if it is a wooden door and require tools not ordinarily found around the home as well as skill not ordinarily found in the average householder. Our lock needs only ordinary household tools for installation.

While we have described the preferred form of our invention, there may be other forms in which our invention may be embodied without leaving the scope of the invention and we do not want to be limited to the exact details as set forth herein but wish to be protected for all constructions within the limitations of the claims following.

Wherefore, we claim:

1. In a closure assembly for a swinging door, an outer doorknob assembly comprising a doorknob, a lock, a hollow shaft extending through the door, said hollow shaft having an inner shaft, disposed therein with a spring operated pin seated'on a recess of said inner shaft, said pin being enclosed by an enlarged portion of the hollow shaft, and adapted to protrude from an opening in the said enlarged portion of the hollow shaft when the inner shaft is partially rotated and adapted to be locked between strikes when it is caused to so protrude, said inner shaft being engaged by the said lock at one end and the other end thereof being hollow; and an inner handle assemblycomprising a handle with a nosed latch portion and a hollow spindle the last mentioned hollow spindle connected to said hollow shaft, said latch portion adapted' to engage a stop rod; an inner latching rod extending out of and rotatively supported within the hollow spindle; of the said handle; whereby when the outer doorknob assembly is attached to the outer side of a door and the inner doorknob assembly is attached to, the inner side of a door, the said inner latching rodwill extend into and engage the hollow end of the inner shaft.

2. In a closure assembly fora swinging door, an outer doorknob assembly comprising a doorknob, a lock, a hollow shaft extending through the door, said hollow shaft having an inner shaft disposed therein with a spring operated pin seated on a recess of said inner shaft, said pin being enclosed by an enlarged portion of the hollow shaft, and adapted to protrude from an opening in the said enlarged portion of the hollow shaft when the inner shaft is partially rotated and adapted to be locked between strikes when it is caused to so protrude, said inner shaft being engaged by the said lock at one end and the other end thereof being hollow; said enlarged portion of the hollow shaft having substantially fiat shoulders which cooperate with at least one spring biased reciprocally mounted stop; and, an inner handle assembly comprising a handle with a nosed latch portion and a hollow spindle the last mentioned hollow spindle being connected to said hollow shaft, said latch portion adapted to engage a stop rod; an inner latching rod extending out of and rotatively supported within the hollow spindle of the said handle; whereby when the outer doorknob assembly is attached to the outer side of a door and theinner doorknob assembly is attached to the inner side of a door, the said inner'l'atching rod will" extend into and engage the hollow end of the inner shaft.

References Cited in the. file of this patent UNITED STATES PATENTS 1,654,149 Teich Dec. 27, 1927 1,668,553 Douglas May .8, 1928 1,896,907 Lindsay Feb. 7,1933 1,916,848 North July 4, 1933 2,697,342 McConnell et a1 Dec. 21, 1954 2,733,089 .Grevengoed Jan. 31, 1956 2,764,014 George Sept. 25, 1956 

